根据提示用适当的介词完成句子。

1.—Where are my books?

   —They're o________ the sofa.

2.—Where is your pen?

  —It's i________ the pencil case.

3.—Where are my shoes?

  —They're u________ the bed.

4.—Where is my cat?

   —It's b________ the door.

5.—Where is the telephone?

   —It's n________ to the sofa.

6.—Where are the CDs?

   —They're on the desk, b________ the books and the TV.

7. Their bookcase is n________ to the table.

8.—Is there a desk b________ the bed?

   —Yes, there's a desk next to the bed.

在决策支持系统中， ______ 为决策捉供了分析能力， ______ 为决策提供了数据能力或资料能力。